Answer:
The effective stress is 225.6 kN/m²
The total vertical stress is 338.4 kN/m²
Explanation:
Given;
depth of soil surface = 6m
weight unit of the soil samples = 18.8 kN/m³
Stress = force/area
Stress = unit weight x depth
Effective stress at a depth of 12 m below the soil surface:
= (18.8 kN/m³) x (12 m)
= 225.6 kN/m²
Effective stress = 225.6 kN/m²
Total vertical stress at a depth of 12 m below the soil surface:
= (18.8 kN/m³) x (6 m) + (18.8 kN/m³) x (12 m)
= 112.8 kN/m² + 225.6 kN/m²
= 338.4 kN/m²
Total vertical stress = 338.4 kN/m²
